Question

In applying one or more row operations while finding A^–1 by elementary row operations, we obtain all zeros in one or more, then A^–1 ______.

Answer 1

In applying one or more row operations while finding A^–1 by elementary row operations, we obtain all zeros in one or more, then A^–1 does not exist.

Explanation:

A^–1 does not exist if we apply one or more row operations while finding A^–1 by elementary row operations, obtain all zeroes in one or more rows.